The city police on Friday night arrested and remanded to custody four students of the Coimbatore Medical College on charges of ragging and causing injuries to 14 junior students.
The college authorities placed them under suspension.
Muthukumar, Ramanan, Logesh, fourth year students, and Karthik, a third year student, face charges of ragging three students on October 19, and 11 students on October 21 in the college hostel.
It is learnt that the seniors took the 11 students from the first and second year to the terrace and ragged them, besides inflicting bite marks on their hands.
One of the students alerted the hostel warden, who held an inquiry and reported the matter to the Dean.
On completion of an inquiry by the Ragging Monitoring Committee, the Dean preferred a complaint.
The arrested students hail from the districts of Dharmapuri, Krishnagiri and Salem.
Police invoked Section 323 (causing hurt) of the Indian Penal Code and Section 4 of the Tamil Nadu Prevention of Ragging Act of 1997.